US Navy shpis commission per year chart

navy_ships.py

import requests
from datetime import datetime

import dateparser
import matplotlib.pyplot as plt
import matplotlib.dates as mdates
from bs4 import BeautifulSoup

url = 'https://en.wikipedia.org/wiki/List_of_current_ships_of_the_United_States_Navy'
html_content = requests.get(url).text

soup = BeautifulSoup(html_content, "lxml")
statki = []
wykres = []
rows = soup.find_all("tr")
for row in rows:
    try:
        name = row.contents[1].contents[0].text
        date = row.contents[9].next.contents[0]
        date = dateparser.parse(date)

        wykres.append(datetime.timestamp(date))
        statki.append((name, date))
    except IndexError:
        pass
    except Exception as e:
        print(e)

print(wykres)

for statek in statki:
    print(statek)

mpl_data = mdates.epoch2num(wykres)
fig, ax = plt.subplots(1, 1)
ax.hist(mpl_data, bins=52, color='lightblue')
ax.xaxis.set_major_locator(mdates.YearLocator())
ax.xaxis.set_major_formatter(mdates.DateFormatter('%Y'))
ax.set_title('US Navy shpis commission per year')
ax.set_xlabel("Year of commission")
ax.set_ylabel("Number of ships")
for tick in ax.get_xticklabels():
    tick.set_rotation(85)


plt.show()